Ticonius — on Rev 8:7 (COMMENTARY ON THE APOCALYPSE 8:7)

“A third of the earth and the trees and all the grass is said to be burned up. The "earth" represents everything terrestrial, while persons who wave about through unfaithfulness are depicted as "trees." For those blown about by "every wind of doctrine" are mentioned by the apostle Jude, "fruitless trees in late autumn, uprooted, twice dead." The green grass represents flesh fattened with luxury, for "all flesh is grass." Although in an earlier passage three fourths were set against one, that is, the church, this passage confines those opposed to the church to two thirds. One third consists of the false brothers who are mixed in among the good within the church, and another third that is separated by the error of the Gentiles or by heretical depravity or by open schism. And so the church (namely, the one third) must struggle against a double evil, as though it were simplicity resisting duplicity. It is as we read in the Gospel that a king with ten thousand went out to war against twenty thousand. And God did make a promise concerning this through Zechariah, saying, "In the whole land, says the Lord, two thirds shall be dispersed and perish, and one third shall remain in it; and I shall lead the third part through fire, and I shall refine them as one refines silver, and I shall test them as gold is tested. It shall call my name, and I will answer them and say, 'You are my people,' and they will say, 'The Lord is my God.' "”